Home / 121,140,386.20-181,710,579.30-72,767,445.40

Finding the Fourth Proportional to 121,140,386.20, 181,710,579.30 and 72,767,445.40

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Solution

The fourth proportional to 121,140,386.20, 181,710,579.30 and 72,767,445.40 is: 109,151,168.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,140,386.20 : 181,710,579.30 = 72,767,445.40 : x
  2. Step 2: Convert to fraction form
    121,140,386.20/181,710,579.30 = 72,767,445.40/x
  3. Step 3: Cross multiply
    121,140,386.20x = 181,710,579.30 × 72,767,445.40
  4. Step 4: Simplify right side
    121,140,386.20x = 13,222,614,657,815,122
  5. Step 5: Solve for x
    x = 13,222,614,657,815,122/121,140,386.20
  6. Step 6: Final answer
    x = 109,151,168.10

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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.