Home / 121,140,315.70-181,710,473.55-72,767,374.90

Finding the Fourth Proportional to 121,140,315.70, 181,710,473.55 and 72,767,374.90

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Solution

The fourth proportional to 121,140,315.70, 181,710,473.55 and 72,767,374.90 is: 109,151,062.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,140,315.70 : 181,710,473.55 = 72,767,374.90 : x
  2. Step 2: Convert to fraction form
    121,140,315.70/181,710,473.55 = 72,767,374.90/x
  3. Step 3: Cross multiply
    121,140,315.70x = 181,710,473.55 × 72,767,374.90
  4. Step 4: Simplify right side
    121,140,315.70x = 13,222,594,152,069,386
  5. Step 5: Solve for x
    x = 13,222,594,152,069,386/121,140,315.70
  6. Step 6: Final answer
    x = 109,151,062.35

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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.