Home / 130,896,939.24-180,638,323.10-72,158,315.58

Finding the Fourth Proportional to 130,896,939.24, 180,638,323.10 and 72,158,315.58

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Solution

The fourth proportional to 130,896,939.24, 180,638,323.10 and 72,158,315.58 is: 99,578,777.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,896,939.24 : 180,638,323.10 = 72,158,315.58 : x
  2. Step 2: Convert to fraction form
    130,896,939.24/180,638,323.10 = 72,158,315.58/x
  3. Step 3: Cross multiply
    130,896,939.24x = 180,638,323.10 × 72,158,315.58
  4. Step 4: Simplify right side
    130,896,939.24x = 13,034,557,123,731,012
  5. Step 5: Solve for x
    x = 13,034,557,123,731,012/130,896,939.24
  6. Step 6: Final answer
    x = 99,578,777.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.