Home / 201,547,205.70-302,320,808.55-86,512,172.10

Finding the Fourth Proportional to 201,547,205.70, 302,320,808.55 and 86,512,172.10

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Solution

The fourth proportional to 201,547,205.70, 302,320,808.55 and 86,512,172.10 is: 129,768,258.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,547,205.70 : 302,320,808.55 = 86,512,172.10 : x
  2. Step 2: Convert to fraction form
    201,547,205.70/302,320,808.55 = 86,512,172.10/x
  3. Step 3: Cross multiply
    201,547,205.70x = 302,320,808.55 × 86,512,172.10
  4. Step 4: Simplify right side
    201,547,205.70x = 26,154,429,818,688,752
  5. Step 5: Solve for x
    x = 26,154,429,818,688,752/201,547,205.70
  6. Step 6: Final answer
    x = 129,768,258.15

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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.