Home / 121,047.40-181,547.10-42,166.12

Finding the Fourth Proportional to 121,047.40, 181,547.10 and 42,166.12

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Solution

The fourth proportional to 121,047.40, 181,547.10 and 42,166.12 is: 63,240.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,047.40 : 181,547.10 = 42,166.12 : x
  2. Step 2: Convert to fraction form
    121,047.40/181,547.10 = 42,166.12/x
  3. Step 3: Cross multiply
    121,047.40x = 181,547.10 × 42,166.12
  4. Step 4: Simplify right side
    121,047.40x = 7,655,136,804.25
  5. Step 5: Solve for x
    x = 7,655,136,804.25/121,047.40
  6. Step 6: Final answer
    x = 63,240.82

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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.