Home / 121,320,123.40-181,980,185.10-120,564,296.20

Finding the Fourth Proportional to 121,320,123.40, 181,980,185.10 and 120,564,296.20

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Solution

The fourth proportional to 121,320,123.40, 181,980,185.10 and 120,564,296.20 is: 180,846,444.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,320,123.40 : 181,980,185.10 = 120,564,296.20 : x
  2. Step 2: Convert to fraction form
    121,320,123.40/181,980,185.10 = 120,564,296.20/x
  3. Step 3: Cross multiply
    121,320,123.40x = 181,980,185.10 × 120,564,296.20
  4. Step 4: Simplify right side
    121,320,123.40x = 21,940,312,938,927,228
  5. Step 5: Solve for x
    x = 21,940,312,938,927,228/121,320,123.40
  6. Step 6: Final answer
    x = 180,846,444.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.