Home / 147,547.51-203,569.40-87,139.53

Finding the Fourth Proportional to 147,547.51, 203,569.40 and 87,139.53

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Solution

The fourth proportional to 147,547.51, 203,569.40 and 87,139.53 is: 120,225.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,547.51 : 203,569.40 = 87,139.53 : x
  2. Step 2: Convert to fraction form
    147,547.51/203,569.40 = 87,139.53/x
  3. Step 3: Cross multiply
    147,547.51x = 203,569.40 × 87,139.53
  4. Step 4: Simplify right side
    147,547.51x = 17,738,942,056.23
  5. Step 5: Solve for x
    x = 17,738,942,056.23/147,547.51
  6. Step 6: Final answer
    x = 120,225.29

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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.